'''
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http:#www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
'''

# import java.util.HashMap;

# import org.apache.jena.rdf.model.Model;
# import org.apache.jena.rdf.model.ModelFactory;
# import org.apache.jena.rdf.model.ModelGetter;
# import org.apache.jena.rdf.model.ModelReader;

from abc import ABC, abstractmethod

from base.rdf.ModelFactory import ModelFactory
from base.rdf.ModelGetter import ModelGetter


class MemoryModelGetter(ABC, ModelGetter):
    # param 
    # result HashMap<String, Model>
    models = dict()

    ##@Override
    # param String URL
    # result Model
    def getModel(self, URL):
        return self.models.get(URL)

    ##@Override
    # param String URL, ModelReader loadIfAbsent
    # result Model
    def getModelIfAbsent(self, URL, loadIfAbsent):
        m = self.models.get(URL)
        if m is None:
            m = ModelFactory.createDefaultModel()
            self.models[URL] = m
        return m
